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The 2 mL of 0.2 M solution of NaOH was added in 10 mL of 0.04 M solution of H3PO4. Calculate the concentration of (HPO4)^2- ions.
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Assume that you dissolve 10.2 g of a mixture of NaOH and Ba(OH)2 in 227.0 mL of water and titrate with 1.47M hydrochloric acid. The titration is complete when 107.8 mL of the acid has been added. What is the mass (in gra ...
How many formula units of Na2SO4are present in a 450 gram sample of the salt? Use 6.022×1023mol-1 or Avogadro's number. Report your answer in scientific notation. Your answer should have two significant figures.
What would an increase in the metal wire mass indicate when the metal wire starts to form copper on it from a chemical reaction from 6M HCl and copper (II) sulfate pentahydrate? What would a decrease in the metal wire ma ...
How many molecules of butane (C4H10) are contained in a 9.213 g sample? How many hydrogen atoms are contained in this sample?
A chemist must prepare 450. mL of 130. mM aqueous aluminum sulfate (Al2(SO4)3) working solution. He'll by pouring out some 0.452 mol/L aqueous aluminum sulfate stock solution into a graduated cylinder and diluting it wit ...
You will have a 500mL solution of salt water. From this you will take 10.0mL and place it on a balance. You find that the 10.0mL solution has a mass of 12.5 g. What is the density of the 500mL of salt water solution in g ...
Does dissolved solids such as sugar and salt modify/change the boiling point of water; do mixtures have the same boiling point as pure substances?
Describe how to assign a Oxidation number from the text: The oxidation number of an atom in an elemental substance is zero. The oxidation number of a monatomic ion is equal to the ion's charge. Oxidation numbers for comm ...
Explain why the mass of the crucible and anhydrous salt is less than the mass of the crucible and the hydrate. What is the chemical formula of copper (II) sulfate?
How much will the temperature change when 3.0 g of tooth enamel (specific heat = 0.18 cal/g C) absorbs 0.80 cal of heat energy?
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